14157391 has 2 divisors, whose sum is σ = 14157392. Its totient is φ = 14157390.

The previous prime is 14157389. The next prime is 14157433. The reversal of 14157391 is 19375141.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 14157391 - 2¹ = 14157389 is a prime.

Together with 14157389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14157371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7078695 + 7078696.

It is an arithmetic number, because the mean of its divisors is an integer number (7078696).

Almost surely, 2^14157391 is an apocalyptic number.

14157391 is a deficient number, since it is larger than the sum of its proper divisors (1).

14157391 is an equidigital number, since it uses as much as digits as its factorization.

14157391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 31.

The square root of 14157391 is about 3762.6308615117. The cubic root of 14157391 is about 241.9140406861.

The spelling of 14157391 in words is "fourteen million, one hundred fifty-seven thousand, three hundred ninety-one".